add start

fedn/cli/session_cmd.py

@@ -1,13 +1,14 @@
 import click
+import requests
 
 from .main import main
-from .shared import CONTROLLER_DEFAULTS, get_response, print_response
+from .shared import CONTROLLER_DEFAULTS, get_api_url, get_response, get_token, print_response
 
 
 @main.group("session")
 @click.pass_context
 def session_cmd(ctx):
-    """:param ctx:"""
+    """Session commands."""
     pass
 
 
@@ -19,12 +20,7 @@ def session_cmd(ctx):
 @session_cmd.command("list")
 @click.pass_context
 def list_sessions(ctx, protocol: str, host: str, port: str, token: str = None, n_max: int = None):
-    """Return:
-    ------
-    - count: number of sessions
-    - result: list of sessions
-
-    """
+    """List sessions."""
     headers = {}
 
     if n_max:
@@ -42,10 +38,112 @@ def list_sessions(ctx, protocol: str, host: str, port: str, token: str = None, n
 @session_cmd.command("get")
 @click.pass_context
 def get_session(ctx, protocol: str, host: str, port: str, token: str = None, id: str = None):
-    """Return:
-    ------
-    - result: session with given session id
-
-    """
+    """Get session by id."""
     response = get_response(protocol=protocol, host=host, port=port, endpoint=f"sessions/{id}", token=token, headers={}, usr_api=False, usr_token=False)
     print_response(response, "session", id)
+
+
+@click.option("-p", "--protocol", required=False, default=CONTROLLER_DEFAULTS["protocol"], help="Communication protocol of controller (api)")
+@click.option("-H", "--host", required=False, default=CONTROLLER_DEFAULTS["host"], help="Hostname of controller (api)")
+@click.option("-P", "--port", required=False, default=CONTROLLER_DEFAULTS["port"], help="Port of controller (api)")
+@click.option("-t", "--token", required=False, help="Authentication token")
+@click.option("-n", "--name", required=False, help="Name of the session")
+@click.option("-a", "--aggregator", required=False, default="fedavg", help="The aggregator plugin to use")
+@click.option("-ak", "--aggregator_kwargs", required=False, type=dict, help="Aggregator keyword arguments")
+@click.option("-m", "--model_id", required=False, help="The id of the initial model")
+@click.option("-rt", "--round_timeout", required=False, default=180, type=int, help="The round timeout to use in seconds")
+@click.option("-r", "--rounds", required=False, default=5, type=int, help="The number of rounds to perform")
+@click.option("-rb", "--round_buffer_size", required=False, default=-1, type=int, help="The round buffer size to use")
+@click.option("-d", "--delete_models", required=False, default=True, type=bool, help="Whether to delete models after each round at combiner (save storage)")
+@click.option("-v", "--validate", required=False, default=True, type=bool, help="Whether to validate the model after each round")
+@click.option("-hp", "--helper", required=False, help="The helper type to use")
+@click.option("-mc", "--min_clients", required=False, default=1, type=int, help="The minimum number of clients required")
+@click.option("-rc", "--requested_clients", required=False, default=8, type=int, help="The requested number of clients")
+@session_cmd.command("start")
+@click.pass_context
+def start_session(
+    ctx,
+    protocol: str,
+    host: str,
+    port: str,
+    token: str,
+    name: str = None,
+    aggregator: str = "fedavg",
+    aggregator_kwargs: dict = None,
+    model_id: str = None,
+    round_timeout: int = 180,
+    rounds: int = 5,
+    round_buffer_size: int = -1,
+    delete_models: bool = True,
+    validate: bool = True,
+    helper: str = None,
+    min_clients: int = 1,
+    requested_clients: int = 8,
+):
+    """Start a new session."""
+    headers = {}
+    _token = get_token(token=token, usr_token=False)
+    if _token:
+        headers = {"Authorization": _token}
+
+    if model_id is None:
+        url = get_api_url(protocol, host, port, "models/active", usr_api=False)
+        response = requests.get(url, headers=headers)
+        if response.status_code == 200:
+            model_id = response.json()
+        else:
+            click.secho(f"Failed to get active model: {response.json()}", fg="red")
+            return
+
+    if helper is None:
+        url = get_api_url(protocol, host, port, "helpers/active", usr_api=False)
+        response = requests.get(url, headers=headers)
+        if response.status_code == 400:
+            helper = "numpyhelper"
+        elif response.status_code == 200:
+            helper = response.json()
+        else:
+            click.secho("An unexpected error occurred when getting the active helper", fg="red")
+            return
+
+    url = get_api_url(protocol, host, port, "sessions/", usr_api=False)
+    response = requests.post(
+        url,
+        json={
+            "name": name,
+            "session_config": {
+                "aggregator": aggregator,
+                "aggregator_kwargs": aggregator_kwargs,
+                "round_timeout": round_timeout,
+                "buffer_size": round_buffer_size,
+                "model_id": model_id,
+                "delete_models_storage": delete_models,
+                "clients_required": min_clients,
+                "requested_clients": requested_clients,
+                "validate": validate,
+                "helper_type": helper,
+                "server_functions": None,
+            },
+        },
+        headers=headers,
+        verify=False,
+    )
+
+    if response.status_code == 201:
+        session_id = response.json()["session_id"]
+        url = get_api_url(protocol, host, port, "sessions/start", usr_api=False)
+        response = requests.post(
+            url,
+            json={
+                "session_id": session_id,
+                "rounds": rounds,
+                "round_timeout": round_timeout,
+            },
+            headers=headers,
+            verify=False,
+        )
+        response_json = response.json()
+        response_json["session_id"] = session_id
+        click.secho(f"Session started successfully: {response_json}", fg="green")
+    else:
+        click.secho(f"Failed to start session: {response.json()}", fg="red")